# -*- coding: utf-8 -*-
# @File : .py
# @Author : ZhouHang
# @Date : 18-8-26
# @Desc :
import time
from datetime import datetime, timedelta

from flask import current_app, jsonify
from flask import g
from flask import redirect
from flask import render_template
from flask import request
from flask import session
from flask import url_for

from info import constants, db
from info.models import User, News, Category
from info.modules.admin import admin_blu
from info.utils.common import user_login_data
from info.utils.image_storage import storage
from info.utils.response_code import RET


@admin_blu.route('/login', methods=["GET", "POST"])
def admin_login():
    if request.method == "GET":
        user_id = session.get("user_id", None)
        is_admin = session.get("is_admin", False)
        # 如果用户id存在，并且是管理员，那么直接跳转管理后台主页
        user = User.query.get(user_id)
        data = {
            "user_info" : user.to_dict()
        }
        if user_id and is_admin:
            return redirect(url_for("admin.admin_index", data=data))

    # 取到登录的参数
    username = request.form.get("username")
    password = request.form.get("password")
    if not all([username, password]):
        return render_template('admin/login.html', errmsg="参数不足")

    try:
        user = User.query.filter(User.mobile == username).first()
    except Exception as e:
        current_app.logger.error(e)
        return render_template('admin/login.html', errmsg="数据查询失败")

    if not user:
        return render_template('admin/login.html', errmsg="用户不存在")

    if not user.check_password(password):
        return render_template('admin/login.html', errmsg="密码错误")

    if not user.is_admin:
        return render_template('admin/login.html', errmsg="用户权限错误")

    session["user_id"] = user.id
    session["nick_name"] = user.nick_name
    session["mobile"] = user.mobile
    session["is_admin"] = True
    data = {
        "user_info" : user.to_dict()
    }

    return redirect(url_for("admin.admin_index" , data = data))

@admin_blu.route('/index')
@user_login_data
def admin_index():
    user = g.user
    data = {
        "user_info" : user.to_dict()
    }
    return render_template('admin/index.html', data = data )



@admin_blu.route('/user_count')
def user_count():
    # 查询总人数
    total_count = 0
    try:
        total_count = User.query.filter(User.is_admin == False).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询月新增数
    mon_count = 0
    try:
        now = time.localtime()
        mon_begin = '%d-%02d-01' % (now.tm_year, now.tm_mon)
        mon_begin_date = datetime.strptime(mon_begin, '%Y-%m-%d')
        mon_count = User.query.filter(User.is_admin == False, User.create_time >= mon_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询日新增数
    day_count = 0
    try:
        day_begin = '%d-%02d-%02d' % (now.tm_year, now.tm_mon, now.tm_mday)
        day_begin_date = datetime.strptime(day_begin, '%Y-%m-%d')
        day_count = User.query.filter(User.is_admin == False, User.create_time > day_begin_date).count()
    except Exception as e:
        current_app.logger.error(e)

    # 查询图表信息
    # 获取到当天00:00:00时间

    now_date = datetime.strptime(datetime.now().strftime('%Y-%m-%d'), '%Y-%m-%d')
    # 定义空数组，保存数据
    active_date = []
    active_count = []

    # 依次添加数据，再反转
    for i in range(0, 31):
        begin_date = now_date - timedelta(days=i)
        end_date = now_date - timedelta(days=(i - 1))
        active_date.append(begin_date.strftime('%Y-%m-%d'))
        count = 0
        try:
            count = User.query.filter(User.is_admin == False, User.last_login >= begin_date,User.last_login < end_date).count()
        except Exception as e:
            current_app.logger.error(e)
        active_count.append(count)

    active_date.reverse()
    active_count.reverse()

    data = {"total_count": total_count, "mon_count": mon_count, "day_count": day_count, "active_date": active_date,
            "active_count": active_count}

    return render_template('admin/user_count.html', data=data)


@admin_blu.route('/user_list')
def user_list():
    """获取用户列表"""

    # 获取参数
    page = request.args.get("page", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1
    # 如果读取不成功　则默认为展示第一页数据
    # 设置变量默认值
    users = []
    current_page = 1
    total_page = 1

    # 查询数据
    try:
        paginate = User.query.filter(User.is_admin == False).order_by(User.last_login.desc()).paginate(page, constants.ADMIN_USER_PAGE_MAX_COUNT, False)
        users = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    # 将模型列表转成字典列表
    users_list = []
    for user in users:
        users_list.append(user)

    data  = {"total_page": total_page, "current_page": current_page, "users": users_list}

    return render_template('admin/user_list.html',data= data )


@admin_blu.route('/review_list')
def review_list():


    # 获取参数
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    keywords = request.args.get("keywords")
    filters = [News.status != 0]
    if keywords:
        filters.append(News.title.contains(keywords))
    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page, constants.ADMIN_NEWS_PAGE_MAX_COUNT, False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    context = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}

    return render_template('admin/news_review.html', data=context)


@admin_blu.route('/news_review_detail')
def news_review_detail():
    """新闻审核"""

    # 获取新闻id
    news_id = request.args.get("news_id")
    if not news_id:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 通过id查询新闻
    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)

    if not news:
        return render_template('admin/news_review_detail.html', data={"errmsg": "未查询到此新闻"})

    # 返回数据
    data = {"news": news.to_dict()}
    return render_template('admin/news_review_detail.html', data=data)



@admin_blu.route('/news_edit')
def news_edit():
    page = request.args.get("p", 1)
    try:
        page = int(page)
    except Exception as e:
        current_app.logger.error(e)
        page = 1

    news_list = []
    current_page = 1
    total_page = 1
    keywords = request.args.get("keywords")
    filters = [News.status != 0]
    if keywords:
        filters.append(News.title.contains(keywords))

    try:
        paginate = News.query.filter(*filters).order_by(News.create_time.desc()).paginate(page,constants.ADMIN_NEWS_PAGE_MAX_COUNT,False)
        news_list = paginate.items
        current_page = paginate.page
        total_page = paginate.pages
    except Exception as e:
        current_app.logger.error(e)

    news_dict_list = []
    for news in news_list:
        news_dict_list.append(news.to_review_dict())

    data  = {"total_page": total_page, "current_page": current_page, "news_list": news_dict_list}
    return render_template("admin/news_edit.html", data = data)




@admin_blu.route('/news_edit_detail', methods = ["POST", "GET"])
def news_edit_detail():
    if request.method == "GET":
        news_id = request.args.get("news_id")

        if not news_id:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询新闻
        news = None
        try:
            news = News.query.get(news_id)
        except Exception as e:
            current_app.logger.error(e)

        if not news:
            return render_template('admin/news_edit_detail.html', data={"errmsg": "未查询到此新闻"})

        # 查询分类的数据
        categories = Category.query.all()
        categories_li = []
        for category in categories:
            c_dict = category.to_dict()
            c_dict["is_selected"] = False
            if category.id == news.category_id:
                c_dict["is_selected"] = True
            categories_li.append(c_dict)
        # 移除`最新`分类
        categories_li.pop(0)

        data = {"news": news.to_dict(), "categories": categories_li}
        return render_template("admin/news_edit_detail.html", data = data)
    # 能到这一步表示是post请求s
    news_id = request.form.get("news_id")
    title = request.form.get("title")
    digest = request.form.get("digest")
    content = request.form.get("content")
    index_image = request.files.get("index_image")
    category_id = request.form.get("category_id")
    # 1.1 判断数据是否有值
    if not all([title, digest, content, category_id]):
        return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

    news = None
    try:
        news = News.query.get(news_id)
    except Exception as e:
        current_app.logger.error(e)
    if not news:
        return jsonify(errno=RET.NODATA, errmsg="未查询到新闻数据")

    # 1.2 尝试读取图片
    if index_image:
        try:
            index_image = index_image.read()
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.PARAMERR, errmsg="参数有误")

        # 2. 将标题图片上传到七牛
        try:
            key = storage(index_image)
        except Exception as e:
            current_app.logger.error(e)
            return jsonify(errno=RET.THIRDERR, errmsg="上传图片错误")
        news.index_image_url = constants.QINIU_DOMIN_PREFIX + key
    # 3. 设置相关数据
    news.title = title
    news.digest = digest
    news.content = content
    news.category_id = category_id

    # 4. 保存到数据库
    try:
        db.session.commit()
    except Exception as e:
        current_app.logger.error(e)
        db.session.rollback()
        return jsonify(errno=RET.DBERR, errmsg="保存数据失败")
    # 5. 返回结果
    return jsonify(errno=RET.OK, errmsg="编辑成功")


@admin_blu.route('/news_category', methods = ["POST", "GET"])
def news_category():
    if request.method == "GET":
        try:
            categories = Category.query.all()
        except Exception as error:
            current_app.logger.error(error)
            return jsonify(errno = RET.DATAERR, errmsg = "数据查询失败")
        category_li = []
        for category in categories:
            category_li.append(category.to_dict())
        data = {
            "categories" : category_li
        }
        return render_template("admin/news_type.html", data=data)
    #走到这有就是post请求了　post请求有两种情况，　第一种是编辑　第二种是添加分类，如果传递的参数有分类id那么就是修改分类信息
    category_name = request.json.get("name")
    category_id = request.json.get("id")
    if not category_name:
        return jsonify(errno = RET.PARAMERR, errmsg = "参数错误")
    if category_id:
        category = Category.query.get(category_id)
        if not category:
            return jsonify(errno = RET.DATAERR, errmsg = "没有此分类")
        category.name = category_name
    else:
        category = Category()
        try:
            category.name = category_name
            db.session.add(category)
        except Exception as error:
            db.rollback()
            current_app.logger.error(error)
            return jsonify(errno=RET.DATAERR, errmsg="添加数据失败")
    return jsonify(errno = RET.OK, errmsg = "ok")



